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1.( ) 坐標平面上,圓 O1 和圓 O2 的半徑分別為 7 和 3,其連心線段長為 4,則圓 O1 和圓 O2 的位置關係為何?(A) 外離 (B) 外切 (C) 內離 (D) 內切
問題詳情
1.( ) 坐標平面上,圓 O1 和圓 O2 的半徑分別為 7 和 3,其連心線段長為 4,則圓 O1 和圓 O2 的位置關係為何?
(A) 外離
(B) 外切
(C) 內離
(D) 內切
參考答案
上一篇 :
24. The speaker’s arguments were very ___________. All the audience believed him.(A) incredible (B)
下一篇 :
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